/* 初始化 */
*{
    padding: 0;
    margin: 0;
    /* 标准盒子 */
    box-sizing: border-box;
}

body{
    /* 引入字体 */
    font-family: "Poppins",sans-serif;
    /* 溢出隐藏 */
    overflow: hidden;
}

.wave{
    position: fixed;
    bottom: 0;
    left: 0;
    height: 100%;
    /* 让他当作一个背景 */
    z-index: -1;
}

.container{
    width: 100vw;
    height: 100vh;
    /* 网格布局 */
    display: grid;
    grid-template-columns: repeat(2,1fr);
    grid-gap: 7rem;
    padding: 0 2rem;
}

.img{
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.login-content{
    display: flex;
    justify-content: flex-start;
    align-items: center;
    /* 文字居中 */
    text-align: center;
}

.img img{
    width: 500px;
}

form{
    width: 360px;
}

.login-content img{
    height: 100px;
}

.login-content h2{
    margin: 15px 0;
    color: #333;
    text-transform: uppercase;
    font-size: 2.9rem;
}

.login-content .input-div{
    /* 相对定位 */
    position: relative;
    display: grid;
    grid-template-columns: 7% 93%;
    margin: 25px 0;
    padding: 5px 0;
    border-bottom: 2px solid #d9d9d9 ;
}

.login-content .input-div.one{
    margin-top: 0;
}

.i{
    color:#d9d9d9 ;
    /* 弹性布局 水平 垂直居中 */
    display: flex;
    justify-content: center;
    align-items: center;
}

.i  i{
    transition: .3s;
}

.input-div > div{
    /* 相对定位 */
    position: relative;
    height: 45px;
}

.input-div > div > h5{
    /* 绝对定位 */
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 18px;
    transition: .3s;
}

.input-div::before , .input-div::after{
    content: "";
    /* 绝对定位 */
    position: absolute;
    bottom: -2px;
    width: 0%;
    height: 2px;
    background-color: #38d39f;
    transition: .4s;
}

.input-div::before{
    right: 50%;
}

.input-div::after{
    left: 50%;
}

.input-div.focus::before , .input-div.focus::after{
    width: 50%;
}

.input-div.focus > div >h5{
    top: -5px;
    font-size: 15px;
}

.input-div.focus > .i > i{
    color: #38d39f;
}

.input-div > div > input{
    /* 绝对定位 */
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    border: none;
    /* 点击输入框的边框也消失 */
    outline: none;
    padding: 0.5rem 0.7rem;
    background: none;
    font-size: 1.2rem;
    color: #555;
    font-family: 'position',sans-serif;
}
.input-div.pass{
    margin-bottom: 4px;
}
a{
    display: block;
    text-align: right;
    /* 下划线消失 */
    text-decoration: none;
    color: #999;
    font-size: 0.9rem;
    transition: .3s;    
}
a:hover{
    color: #38d39f;
}
.btn{
    display: block;
    width: 100%;
    height: 50px;
    border-radius: 25px;
    outline: none;
    border: none;
    background-image: linear-gradient(to right,#32be8f,#32b39f,#32be8f);
    background-size: 200%;
    font-size: 1.2rem;
    color: #fff;
    font-family: 'Poppins',sans-serif;
    text-transform: uppercase;
    margin: 1rem 0;
    /* 鼠标放上变小手 */
    cursor: pointer;
    transition: .5s;    
}

.btn:hover{
    background-position: right;
}

@media  screen and (max-width: 1050px){ 
    .container{
        grid-gap: 5rem;
    }
}

@media  screen and (max-width: 1000px){ 
    form{
        width: 290px;
    }
    .login-content h2{
        font-size: 2.4rem;
        margin: 8px 0;
    }
    .img img{
        width: 400px;
    }
}

@media  screen and (max-width: 900px){ 
    .container{
        grid-template-columns: 1fr;
    }
    .img{
        display: none;
    }
    .wave{
        display: none;
    }
    .login-content{
        justify-content: center;
    }
}